B2O3/Al2O3 as a new, highly efficient and reusable heterogeneous catalyst for the selective synthesis of β-enamino ketones and esters under solvent-free …

JX Chen, CF Zhang, WX Gao, HL Jin…

Index: Chen, Jiu-Xi; Zhang, Chang-Fu; Gao, Wen-Xia; Jin, Hui-Le; Ding, Jin-Chang; Wu, Hua-Yue Journal of the Brazilian Chemical Society, 2010 , vol. 21, # 8 p. 1552 - 1556

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Citation Number: 6

Abstract

Boron oxide adsorbed on alumina (B2O3/Al2O3) has been found to be a new and highly efficient heterogeneous catalyst for the synthesis of β-enamino ketones and esters by the enamination of various primary and secondary amines with β-dicarbonyl compounds under solvent-free conditions. The important features of this methodology are broad substrate scope, high yield, no requirement of metal catalysts, high regio-and chemoselectivity and ...